Electrochemical behavior of GNP/CNT porous composite for supercapacitor

[Display omitted] •CNT/Graphene composite with porous and interconnected spherical morphologies.•Structural and electrochemical characterization of all the graphene composite.•Graphene with 1.0 wt% CNT showed a Csp of 143 Fg−1 with 93% cyclic stability. Herein, we systematically demonstrate the syne...

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Bibliographic Details
Published inChemical physics letters Vol. 827; p. 140695
Main Authors Pandit, Niranjan, Singh, Pushpender, Prasad, Suraj, Kumar Keshri, Anup, Czagany, Mate, Hompoth, Szabolcs, Gacsi, Zoltan, Baumli, Peter
Format Journal Article
LanguageEnglish
Published Elsevier B.V 16.09.2023
Subjects
Carbon nanotube
Graphene Nanoplatelets
Porous composite
Supercapacitor
Carbon nanotube
Supercapacitor
Graphene Nanoplatelets
Porous composite
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Summary:[Display omitted] •CNT/Graphene composite with porous and interconnected spherical morphologies.•Structural and electrochemical characterization of all the graphene composite.•Graphene with 1.0 wt% CNT showed a Csp of 143 Fg−1 with 93% cyclic stability. Herein, we systematically demonstrate the synergistic behavior of GNP/CNT composite as an electrode material. Uniform dispersion of CNTs effectively inhibits the restacking of GNP sheets, resulting in enhanced specific surface area, porosity, and conductivity. Moreover, CNT intercalation provides a porous and interconnected network for electrolyte ion transportation. As a result, GNP composite having 1.0 wt% multi-walled carbon nanotube (MWCNTs) shows specific capacitance up to 143 Fg−1 at 5 mVs−1, an improvement of 150% compared to pristine GNPs. The improved electrochemical performance implies that the proposed composite electrode is a promising candidate for supercapacitor application.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2023.140695